Support TypeScript parser in eslint (codesandbox#1991)

* Support TypeScript parser in eslint

* Support tsx

* Fix eslint errors

* Fix config

* Remove css prop

Author: CompuIves

.eslintrc

@@ -44,5 +44,41 @@
     "camelcase": "error",
     "react-hooks/rules-of-hooks": "error",
     "react-hooks/exhaustive-deps": "warn"
+  },
+  "overrides": {
+    "files": ["**/*.ts", "**/*.tsx"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 2018,
+      "sourceType": "module",
+      "ecmaFeatures": { "jsx": true },
+      "warnOnUnsupportedTypeScriptVersion": true
+    },
+    "plugins": ["@typescript-eslint"],
+    "rules": {
+      "default-case": "off",
+      "no-dupe-class-members": "off",
+      "@typescript-eslint/no-angle-bracket-type-assertion": "warn",
+      "no-array-constructor": "off",
+      "@typescript-eslint/no-array-constructor": "warn",
+      "@typescript-eslint/no-namespace": "error",
+      "no-use-before-define": "off",
+      "@typescript-eslint/no-use-before-define": [
+        "warn",
+        {
+          "functions": false,
+          "classes": false,
+          "variables": false,
+          "typedefs": false
+        }
+      ],
+      "no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        { "args": "none", "ignoreRestSiblings": true }
+      ],
+      "no-useless-constructor": "off",
+      "@typescript-eslint/no-useless-constructor": "warn"
+    }
   }
 }

package.json

@@ -54,8 +54,8 @@
   "devDependencies": {
     "@types/react": "^16.8.12",
     "all-contributors-cli": "^5.4.0",
-    "babel-eslint": "^8.2.1",
-    "eslint": "CompuIves/eslint#add/define-parser",
+    "babel-eslint": "^10.0.1",
+    "eslint": "5.16.0",
     "eslint-config-airbnb": "^15.0.1",
     "eslint-config-prettier": "^4.2.0",
     "eslint-import-resolver-webpack": "^0.8.1",
@@ -74,6 +74,8 @@
     "typescript": "3.3.4000"
   },
   "dependencies": {
+    "@typescript-eslint/eslint-plugin": "^1.9.0",
+    "@typescript-eslint/parser": "^1.9.0",
     "opencollective": "^1.0.3"
   },
   "collective": {

packages/app/src/app/components/CodeEditor/Monaco/workers/fetch-dependency-typings.js

@@ -99,17 +99,6 @@ const tempTransformFiles = files => {
   return finalObj;
 };
 
-const transformFiles = dir =>
-  dir.files
-    ? dir.files.reduce((prev, next) => {
-        if (next.type === 'file') {
-          return { ...prev, [next.path]: next };
-        }
-
-        return { ...prev, ...transformFiles(next) };
-      }, {})
-    : {};
-
 const getFileMetaData = (dependency, version, depPath) =>
   doFetch(
     `https://data.jsdelivr.com/v1/package/npm/${dependency}@${version}/flat`